Inspection steps
WARNING: This page is about a different car, the 2018 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
- The entry & start system uses the CAN communication. Before performing troubleshooting, perform the inspection in "How to trouble-shoot", and check that there are no communication problems. (Refer to HOW TO PROCEED WITH TROUBLESHOOTING )
- Before replacing the collation ECM (smart key ECM ASSY), refer to "entry & start system (entry function)". (Refer to ENTRY & START SYSTEM (ENTRY FUNCTION) )
- Check that no DTC is output. If any DTC is output, proceed to "List of diagnostic codes". (Refer to DIAGNOSTIC TROUBLE CODE CHART )
- If the entry & start system has been disabled by the entry & start system customize settings, enable it before performing troubleshooting. (Refer to CUSTOMIZE PARAMETERS )
- Before performing the following inspection steps, check the fuses related to this system.
- After finishing repair, check that the problem doesn't occur again.
- Checking the harnesses and connectors (instrument panel junction block ASSY - collation ECM) (Refer to
CIRCUIT FIGURE )
OK: Go to next step
NG: Repair or replacement of the harnesses or connectors
- Unit inspection of the instrument panel junction block ASSY (ACC relay) (Refer to
DTC B2275 STSW CIRCUIT ABNORMAL )
OK: Go to next step
NG: Replacement of the instrument panel junction block ASSY
- Inspection of the collation ECM (smart key ECM ASSY) (Refer to
DTC B2275 STSW CIRCUIT ABNORMAL )
OK: Go to next step
NG: Replacement of the collation ECM (smart key computer ASSY)
Checking the circuits connected to the relay